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   <div id="projectname"><a href="index.html">yyjson</a><span id="projectnumber">&#160;0.12.0</span>
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   <div id="projectbrief">A high performance C JSON library.</div>
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  <div class="headertitle"><div class="title">Changelog</div></div>
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<div class="textblock"><p><a class="anchor" id="changelog"></a></p>
<p>All notable changes to this project will be documented in this file.</p>
<h1><a class="anchor" id="autotoc_md0129-2025-08-18"></a>
0.12.0 (2025-08-18)</h1>
<h3><a class="anchor" id="added"></a>
Added</h3>
<ul>
<li>Add <code><a class="el" href="yyjson_8h.html#a26250087651ed3282ef31a27a0673333">yyjson_write_number()</a></code> and <code><a class="el" href="yyjson_8h.html#a9dec76e0a9d0c9e6039f2d15ec8b26fb">yyjson_mut_write_number()</a></code> to write a number value to a string buffer.</li>
<li>Add <code>YYJSON_READ_ALLOW_EXT_NUMBER</code> to support extended number formats, such as <code>0x7B</code>, <code>+.123</code>.</li>
<li>Add <code>YYJSON_READ_ALLOW_EXT_ESCAPE</code> to support extended escape, such as <code>\a</code>, <code>\0</code>, <code>\x7B</code>.</li>
<li>Add <code>YYJSON_READ_ALLOW_EXT_WHITESPACE</code> to support extended whitespace, such as <code>\v</code>, <code>\u2028</code>.</li>
<li>Add <code>YYJSON_READ_ALLOW_SINGLE_QUOTED_STR</code> to support single-quoted strings, such as &lsquo;'ab&rsquo;<code>.</code></li>
<li><code>Add</code>YYJSON_READ_ALLOW_UNQUOTED_KEY<code>to allow unquoted keys, such as</code>{a:1,b:2}<code>.</code></li>
<li><code>Add</code>YYJSON_READ_JSON5` to enable full JSON5 support.</li>
</ul>
<h3><a class="anchor" id="changed"></a>
Changed</h3>
<ul>
<li>Removed support for non-standard JSON in the incremental reader <code><a class="el" href="yyjson_8h.html#adf5847c72fffb345de33667fd935097a">yyjson_incr_read()</a></code>.</li>
</ul>
<h1><a class="anchor" id="autotoc_md0111-2025-05-14"></a>
0.11.1 (2025-05-14)</h1>
<h3><a class="anchor" id="fixed"></a>
Fixed</h3>
<ul>
<li>Fix errors when unaligned access is disallowed (no impact if your build was already successful).</li>
</ul>
<h1><a class="anchor" id="autotoc_md0110-2025-05-05"></a>
0.11.0 (2025-05-05)</h1>
<h3><a class="anchor" id="added-1"></a>
Added</h3>
<ul>
<li>Add <code>YYJSON_READ_ALLOW_BOM</code> flag to allow UTF-8 BOM.</li>
<li>Add <code>YYJSON_WRITE_FP_TO_FLOAT</code> flag to write real numbers using single-precison.</li>
<li>Add <code><a class="el" href="yyjson_8h.html#aa6456ada04bdbe304c1f3fb14e309ac6">YYJSON_WRITE_FP_TO_FIXED(prec)</a></code> flag to write real numbers using fix-point notation.</li>
<li>Add <code>set_fp_to_float()</code> and <code>set_fp_to_fixed()</code> functions to control the output format of a specific number.</li>
<li>Add <code>set_str_noesc()</code> function to skip escaping for a specific string during writing.</li>
<li>Add <code><a class="el" href="yyjson_8h.html#adf5847c72fffb345de33667fd935097a">yyjson_incr_read()</a></code>, <code><a class="el" href="yyjson_8h.html#a49c78bbfa5c961c1807d332f52d201f4">yyjson_incr_new()</a></code>, <code><a class="el" href="yyjson_8h.html#a333bd893cdd22a379e2476e90b5532f2">yyjson_incr_free()</a></code> functions for incremental DOM reading.</li>
</ul>
<h3><a class="anchor" id="changed-1"></a>
Changed</h3>
<ul>
<li>Rewrite the floating-point number to string functions with a new fast path.</li>
<li>When comments are allowed, return <code>UNEXPECTED_END</code> instead of <code>INVALID_COMMENT</code> for unclosed comments.</li>
<li>Truncated escape sequences now report the error position at the sequence start rather than the end.</li>
</ul>
<h3><a class="anchor" id="fixed-1"></a>
Fixed</h3>
<ul>
<li>Fix some warnings when directly including yyjson.c: #177</li>
<li>Fix missing indent for <code>YYJSON_TYPE_RAW</code> in prettify function: #178</li>
<li>Fix bug in <code><a class="el" href="yyjson_8h.html#a20fa69856e99295473e1b3e111adc3b1">yyjson_mut_arr_iter_remove()</a></code>: #194</li>
<li>Fix clang 19 documentation warnings.</li>
<li>Fix cmake 4 and cmake 3.5 warnings.</li>
</ul>
<h1><a class="anchor" id="autotoc_md0100-2024-07-09"></a>
0.10.0 (2024-07-09)</h1>
<h3><a class="anchor" id="added-2"></a>
Added</h3>
<ul>
<li>Add <code><a class="el" href="yyjson_8h.html#ac742b11ff26fb9af6362ffd2f3f21061">yyjson_locate_pos()</a></code> function to locate the line and column number for error position: #166</li>
</ul>
<h3><a class="anchor" id="changed-2"></a>
Changed</h3>
<ul>
<li>Improve error messages for JSON reader: #168</li>
</ul>
<h3><a class="anchor" id="fixed-2"></a>
Fixed</h3>
<ul>
<li>Fix <code>YYJSON_READ_NUMBER_AS_RAW</code> not overriding <code>YYJSON_READ_BIGNUM_AS_RAW</code> as per documentation: #170</li>
</ul>
<h1><a class="anchor" id="autotoc_md090-2024-04-08"></a>
0.9.0 (2024-04-08)</h1>
<h3><a class="anchor" id="added-3"></a>
Added</h3>
<ul>
<li>Add <code>YYJSON_WRITE_NEWLINE_AT_END</code> flag for JSON writer: #147</li>
</ul>
<h3><a class="anchor" id="changed-3"></a>
Changed</h3>
<ul>
<li>Add auto-type conversion (uint&lt;-&gt;sint) to <code>yyjson_ptr_get_uint/sint()</code>: #152</li>
</ul>
<h3><a class="anchor" id="fixed-3"></a>
Fixed</h3>
<ul>
<li>Fix incorrect output in environments lacking native <code>bool</code> type support: #161</li>
</ul>
<h1><a class="anchor" id="autotoc_md080-2023-09-13"></a>
0.8.0 (2023-09-13)</h1>
<h3><a class="anchor" id="added-4"></a>
Added</h3>
<ul>
<li>Add <code>YYJSON_SUBTYPE_NOESC</code> subtype to mark strings that do not need to be escaped.</li>
<li>Add <code>YYJSON_DISABLE_UTF8_VALIDATION</code> flag to allow disable UTF-8 validation at compile-time.</li>
<li>Add dynamic allocator API: <code><a class="el" href="yyjson_8h.html#a6a90ae91b82c2e8d6665a28a691eee18">yyjson_alc_dyn_new()</a></code>, <code><a class="el" href="yyjson_8h.html#aaa9b7978e7b40e6d5d8d1cb3da0568d6">yyjson_alc_dyn_free()</a></code>.</li>
<li>Add the missing <code>yyjson_mut_obj_add_arr/obj()</code> API: #140</li>
</ul>
<h3><a class="anchor" id="changed-4"></a>
Changed</h3>
<ul>
<li>Improve the write performance of strings with <code>YYJSON_SUBTYPE_NOESC</code>.</li>
</ul>
<h3><a class="anchor" id="fixed-4"></a>
Fixed</h3>
<ul>
<li>Fix clang-16 valgrind fail: #134</li>
<li>Fix compile break when both <code>FAST_FP</code> and <code>READER</code> are disabled</li>
</ul>
<h1><a class="anchor" id="autotoc_md070-2023-05-25"></a>
0.7.0 (2023-05-25)</h1>
<h3><a class="anchor" id="added-5"></a>
Added</h3>
<ul>
<li>Add <code>YYJSON_WRITE_PRETTY_TWO_SPACES</code> option to allow 2 spaces instead of 4 spaces when writing pretty JSON: #99</li>
<li>Add <code>YYJSON_READ_BIGNUM_AS_RAW</code> option to read big numbers as raw strings: #124</li>
<li>Add <code><a class="el" href="yyjson_8h.html#ac24ffc0726b50f38283c9f01f4e58d9b">yyjson_get_num()</a></code> function to convert and return any number value as <code>double</code>: #108</li>
<li>Add support for Loongarch: #112</li>
<li>Add functions to get type-specific values specified by JSON Pointer: #116</li>
<li>Add functions to read/write JSON with file pointer <code>FILE *</code>: #122</li>
<li>Add functions to support modifying memory pool size of <code><a class="el" href="yyjson_8h.html#structyyjson__mut__doc">yyjson_mut_doc</a></code>.</li>
<li>Add convenience functions <code>iter_with()</code> for creating iterator.</li>
<li>Add functions to modify JSON using JSON Pointer, such as <code>ptr_set()</code> and <code>ptr_remove()</code>.</li>
<li>Add support for JSON Patch (RFC 6902).</li>
</ul>
<h3><a class="anchor" id="changed-5"></a>
Changed</h3>
<ul>
<li><b>BREAKING CHANGE:</b> Change the allocator's realloc function signature, add <code>old_size</code> parameter for custom allocator: #100</li>
<li><b>BREAKING CHANGE:</b> Change <code><a class="el" href="yyjson_8h.html#a2b7dfa8495fb1d839e6294f2e7c4b58a">yyjson_read_number()</a></code> function, add <code>alc</code> parameter.</li>
<li><b>DEPRECATED:</b> Deprecate <code>get_pointer()</code> functions, rename to <code>ptr_get()</code>.</li>
<li>Improve performance of <code><a class="el" href="yyjson_8h.html#a881e2ee3f487385810829df8bc675f1f">yyjson_mut_write()</a></code> function.</li>
</ul>
<h3><a class="anchor" id="fixed-5"></a>
Fixed</h3>
<ul>
<li>Fix inaccurate error code for truncated JSON: #103</li>
</ul>
<h1><a class="anchor" id="autotoc_md060-2022-12-12"></a>
0.6.0 (2022-12-12)</h1>
<h3><a class="anchor" id="added-6"></a>
Added</h3>
<ul>
<li>Add functions to modify the content of a JSON value, such as <code><a class="el" href="yyjson_8h.html#af1f4dd90c0bd891cb139e72cfd588789">yyjson_set_int(yyjson_val *val, int num)</a></code>.</li>
<li>Add functions to copy from mutable doc to immutable doc.</li>
<li>Add functions to support renaming an object's key.</li>
<li>Add the <code><a class="el" href="yyjson_8h.html#a2b7dfa8495fb1d839e6294f2e7c4b58a">yyjson_read_number()</a></code> function to parse numeric strings.</li>
<li>Add a placeholder allocator if <code><a class="el" href="yyjson_8h.html#a6068c4293a2b35493b18421b9afbd3d5">yyjson_alc_pool_init()</a></code> fails.</li>
</ul>
<h3><a class="anchor" id="fixed-6"></a>
Fixed</h3>
<ul>
<li>Fix quite NaN on MIPS and HPPA arch.</li>
<li>Fixed compile error before <code>GCC 4.5</code>, which doesn't support empty optional extended asm label.</li>
<li>When the built-in floating point conversion is disabled, the <code>sprintf()</code> output for floating point numbers is missing a decimal point, for example 123 should be 123.0.</li>
</ul>
<h1><a class="anchor" id="autotoc_md051-2022-06-17"></a>
0.5.1 (2022-06-17)</h1>
<h3><a class="anchor" id="fixed-7"></a>
Fixed</h3>
<ul>
<li>Fix run-time error when compiling as cpp and 32-bit (g++-5 -m32 -fPIC) #85</li>
<li>Fix incurrect output number format, remove unnecessary digits (e.g. 2.0e34 -&gt; 2e34).</li>
</ul>
<h1><a class="anchor" id="autotoc_md050-2022-05-25"></a>
0.5.0 (2022-05-25)</h1>
<h3><a class="anchor" id="added-7"></a>
Added</h3>
<ul>
<li>Add LibFuzzer support.</li>
<li>Add Doxygen support.</li>
<li>Add functions to support serializing a single JSON value.</li>
<li>Add <code><a class="el" href="yyjson_8h.html#a6ee1dc133fa773528286cd0b25300cb2">yyjson_mut_doc_mut_copy()</a></code>, <code><a class="el" href="yyjson_8h.html#a66761be40cfb010086ec798ddb44018f">yyjson_mut_val_mut_copy()</a></code>, <code><a class="el" href="yyjson_8h.html#aad64266ebfbdd2a9627050cf1f3f48d7">yyjson_mut_merge_patch()</a></code> functions for mutable input.</li>
<li>Add <code><a class="el" href="yyjson_8h.html#adabd9eb44fac843109d6bc79f12ff6ff">yyjson_equals()</a></code> and <code><a class="el" href="yyjson_8h.html#ab0a5c5a568b7f2c0a6301149f0f6aa84">yyjson_mut_equals()</a></code> functions to compare two values.</li>
<li>Add <code><a class="el" href="yyjson_8h.html#a13d5da22b245b8242d9c5c6bd6b3582b">yyjson_mut_obj_remove_key()</a></code> and <code><a class="el" href="yyjson_8h.html#a36b5cade5e5cfecd47e9ae584078e2b4">yyjson_mut_obj_remove_keyn()</a></code> functions to simplify key removal.</li>
<li>Add <code>YYJSON_READ_NUMBER_AS_RAW</code> option and <code>RAW</code> type support.</li>
<li>Add <code>YYJSON_READ_ALLOW_INVALID_UNICODE</code> and <code>YYJSON_WRITE_ALLOW_INVALID_UNICODE</code> options to allow invalid unicode.</li>
</ul>
<h3><a class="anchor" id="changed-6"></a>
Changed</h3>
<ul>
<li>Change <code><a class="el" href="yyjson_8h.html#a660d533ce8b661e85c5b14e4e99e5085">yyjson_mut_obj_remove()</a></code> return type from <code>bool</code> to <code><a class="el" href="yyjson_8h.html#structyyjson__mut__val">yyjson_mut_val</a> *</code>.</li>
<li>Rewrite string serialization function, validate unicode encoding by default.</li>
<li>Rewrite the JSON Pointer implementation, remove internal malloc() calls.</li>
</ul>
<h3><a class="anchor" id="fixed-8"></a>
Fixed</h3>
<ul>
<li>Make the code work correctly with <code>setlocale()</code> function and <code>-ffast-math</code> flag: #54</li>
<li>Fix negative infinity literals read error: #64</li>
<li>Fix non null-terminated string write error.</li>
<li>Fix incorrect behavior of <code>YYJSON_DISABLE_NON_STANDARD</code> flag: #80</li>
</ul>
<h1><a class="anchor" id="autotoc_md040-2021-12-12"></a>
0.4.0 (2021-12-12)</h1>
<h3><a class="anchor" id="added-8"></a>
Added</h3>
<ul>
<li>Add <code>YYJSON_WRITE_INF_AND_NAN_AS_NULL</code> flag for JSON writer.</li>
<li>Add <code><a class="el" href="yyjson_8h.html#a9026faa4e022392c28e8f9afa553362f">yyjson_merge_patch()</a></code> function for JSON Merge-Path API (RFC 7386).</li>
<li>Add <code><a class="el" href="yyjson_8h.html#a964840d68d5d27ad2e16c63b4b2475b6">yyjson_mut_obj_replace()</a></code> and <code><a class="el" href="yyjson_8h.html#a98e9f97614fce2a6187473eeb35274e8">yyjson_mut_obj_insert()</a></code> functions for object modification.</li>
<li>Add <code><a class="el" href="yyjson_8h.html#a1f3b09c4f279287f8af93b3754a41e85">yyjson_obj_iter_get()</a></code> and <code><a class="el" href="yyjson_8h.html#a9e79f1480256c6e2e8dfbf61da9cd853">yyjson_mut_obj_iter_get()</a></code> functions for faster object search.</li>
<li>Add <code><a class="el" href="yyjson_8h.html#a874f912f9c023bc353d1a770798017a1">yyjson_version()</a></code> function.</li>
</ul>
<h3><a class="anchor" id="changed-7"></a>
Changed</h3>
<ul>
<li>Replace <code>YYJSON_DISABLE_COMMENT_READER</code> and <code>YYJSON_DISABLE_INF_AND_NAN_READER</code> with <code>YYJSON_DISABLE_NON_STANDARD</code> compile-time flag.</li>
<li>Replace <code>YYJSON_DISABLE_FP_READER</code> and <code>YYJSON_DISABLE_FP_WRITER</code> with <code>YYJSON_DISABLE_FAST_FP_CONV</code> compile-time flag.</li>
</ul>
<h3><a class="anchor" id="fixed-9"></a>
Fixed</h3>
<ul>
<li>Fix compiler warning with <code>-Wconversion</code></li>
<li>Fix compiler error for GCC 4.4 (#53) and MSVC 6.0 (#55)</li>
</ul>
<h1><a class="anchor" id="autotoc_md030-2021-05-25"></a>
0.3.0 (2021-05-25)</h1>
<h3><a class="anchor" id="added-9"></a>
Added</h3>
<ul>
<li>Add <code>JSON Pointer</code> support.</li>
<li>Add CMake install target.</li>
</ul>
<h3><a class="anchor" id="changed-8"></a>
Changed</h3>
<ul>
<li>Improve performance for some architectures that don't support unaligned memory access.</li>
</ul>
<h3><a class="anchor" id="fixed-10"></a>
Fixed</h3>
<ul>
<li>Fix some compiler warnings for GCC and Clang.</li>
<li>Fix MSVC build error on UWP (uninitialized local variable).</li>
<li>Fix stream file reading error on some platforms.</li>
</ul>
<h1><a class="anchor" id="autotoc_md020-2020-12-12"></a>
0.2.0 (2020-12-12)</h1>
<h3><a class="anchor" id="added-10"></a>
Added</h3>
<ul>
<li>Add swift package manager support.</li>
</ul>
<h3><a class="anchor" id="changed-9"></a>
Changed</h3>
<ul>
<li>Improve JSON reader performance for gcc.</li>
<li>Improve double number reader performance with a fast path.</li>
<li>Rewrite double number writer with Schubfach algorithm: #4.</li>
<li>Strict UTF-8 validation for JSON reader.</li>
</ul>
<h3><a class="anchor" id="removed"></a>
Removed</h3>
<ul>
<li>Remove <code>YYJSON_READ_FASTFP</code> compile-time flag.</li>
</ul>
<h3><a class="anchor" id="fixed-11"></a>
Fixed</h3>
<ul>
<li>Fix a compile error for old version gcc on linux: #7.</li>
</ul>
<h1><a class="anchor" id="autotoc_md010-2020-10-26"></a>
0.1.0 (2020-10-26)</h1>
<h3><a class="anchor" id="added-11"></a>
Added</h3>
<ul>
<li>Initial release.</li>
<li>Add the basic JSON reader and writer (RFC 8259).</li>
<li>Add CMake support.</li>
<li>Add GitHub CI workflow.</li>
<li>Add test code and test data.</li>
<li>Add <code>sanitizer</code> and <code>valgrind</code> memory checker.</li>
<li>Add <code>API</code> and <code>DataStructure</code> documentation. </li>
</ul>
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